To find volume $ V $ use formula:
$$ V = \dfrac{ 4 \cdot r^3 \cdot \pi}{ 3 } $$After substituting $r = 4.3\, \text{in}$ we have:
$$ V = \dfrac{ 4 \cdot \left( 4.3\, \text{in} \right)^{3} \cdot \pi}{ 3 } $$ $$ V = \dfrac{ 4 \cdot 79.507\, \text{in}^3 \cdot \pi}{ 3 }$$ $$ V = \dfrac{ 318.028\, \text{in}^3 \cdot \pi}{ 3 }$$ $$ V = 106.0093\, \text{in}^3 \cdot \pi $$